Most of brains of living organisms are same but all of them are totally different.

1. Neuroscience for Kids (http://faculty.washington.edu/chudler/neurok.html)
Images courtesy of the Comparative Mammalian Brain Collection (http://www.brainmuseum.org)

2. Neuroscience for Kids (http://faculty.washington.edu/chudler/neurok.html)
Images courtesy of the Comparative Mammalian Brain Collection (http://www.brainmuseum.org)